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Commit 52856ed7 authored by Alan Cox's avatar Alan Cox Committed by Linus Torvalds
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ldisc: Make sure the ldisc isn't active when we close it 



Signed-off-by: default avatarAlan Cox <alan@linux.intel.com>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 8d2ead74

drivers/char/tty_ldisc.c

+2 −0
Original line number Original line Diff line number Diff line
@@ -793,6 +793,8 @@ void tty_ldisc_hangup(struct tty_struct *tty) 
		/* Avoid racing set_ldisc */

		/* Avoid racing set_ldisc */

		mutex_lock(&tty->ldisc_mutex);

		mutex_lock(&tty->ldisc_mutex);

		/* Switch back to N_TTY */

		/* Switch back to N_TTY */

		tty_ldisc_halt(tty);

		tty_ldisc_wait_idle(tty);

		tty_ldisc_reinit(tty);

		tty_ldisc_reinit(tty);

		/* At this point we have a closed ldisc and we want to

		/* At this point we have a closed ldisc and we want to

		   reopen it. We could defer this to the next open but

		   reopen it. We could defer this to the next open but